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Types of Chemical Reactions

Total questions: 62

Worksheet time: 59mins

Name
Class
Date
1.
2 NaBr + 1 Ca(OH)2 ----> 1 CaBr2 + 2 NaOH
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
2.
2 NH3+ 1 H2SO4 ----> 1 (NH4)2SO4
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
3.
3 Pb + 2 H3PO4 ----> 3 H2 + 1 Pb3(PO4)2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
4.
1 Li3N + 3 NH4NO3 ----> 3 LiNO3 + 1 (NH4)3N
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
5.
3 HBr + 1 Al(OH)3 ----> 3 H­2O + 1 AlBr3
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
6.
Na3PO4 + 3 KOH ----> 3 NaOH + K3PO4
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
7.
Pb + FeSO4 ----> PbSO4 + Fe
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
8.
CaCO3 ----> CaO + CO2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
9.
MgCl2 + Li2CO3 ----> MgCO3 + 2 LiCl
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
10.
2 RbNO3 + BeF2 ----> Be(NO3)2 + 2 RbF
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
11.
P4 +  3 O2 ----> 2 P2O3
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
12.
2 AgNO3 + Cu ----> Cu(NO3)2 + 2 Ag
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
13.
2 C5H5 + Fe ----> Fe(C5H5)2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
14.
SeCl6 + O2 ----> SeO2 + 3Cl2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
15.
2 MgI2 + Mn(SO3)2 ----> 2 MgSO3 + MnI4
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
16.
O3  ----> O. + O2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
17.
2 NO2 ----> 2 O2 + N2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
18.
Combining substances to form a new substance
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Oxidation
19.
Breaking down a substance into simpler substances
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Oxidation
20.
Switching one substance for another
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Oxidation
21.
CxHy +O2 --> H2O + CO2
a)
Decomposition
b)
Double replacement
c)
Combustion
d)
Single Replacement
22.
This pictures simulates what type of reaction?
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
23.
What is the left part of a chemical equation called?
H2 + O → H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
24.

Combustion reactions will always involve

a)

Oxygen and a solid

b)

Liquid nitrogen and heat

c)

Oxygen and heat/energy

d)

CO and H2O

25.
Consider the chemical equation CH4 + 2 O2 → CO2 + 2 H2O. In this equation, CH4 is a
a)
product
b)
reactant
c)
displacement
26.
Consider the equation 4 Fe+3 O2 → 2 Fe2O3 . In this equation, 3 O2 is a
a)
product
b)
reactant
c)
compound
27.
Which generalized equation represents a synthesis reaction?
a)
A + BC → AC+ B
b)
A + B → AB
c)
AB → A + B
28.
Which generalized equation represents a decomposition reaction?
a)
A + BC → AC+ B
b)
A + B → AB
c)
AB → A + B
29.
Which generalized equation represents a single displacement reaction?
a)
A + BC → AC+ B
b)
A + B → AB
c)
AB → A + B
30.
Always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water. 
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
31.
What is the type of reaction shown at the top?
a)
Combination
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
32.
This pictures simulates what type of reaction?
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
33.
What type a reaction is taking place in this picture?
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
34.
What does (aq) mean in a chemical reaction?
a)
Ag
b)
silver
c)
aqualirious
d)
aqueous
35.
When balancing equations what does
 -->
mean?
a)
subscript
b)
equals
c)
it is just an arrow
d)
yield
36.
What is the right part of a chemical equation called?
H2 + O → H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
37.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number in front of a chemical formula.
c)
The number in between the chemical symbols.
d)
The number behind a chemical formula.
38.
What is the part of the chemical equation in green called? 
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
39.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
40.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
41.
Which problem is balanced?
(Check ALL answers)
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
42.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
43.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
44.

Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe

a)

yes

b)

no

45.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

46.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
47.
Is the following equation balanced?
2C2H2 + 5O2 --> 4CO2 + 2H2O
a)
yes
b)
no
48.
Is the following reaction balanced?
NaHCO3 --> Na2CO3 + H2O + CO2
a)
yes
b)
no
49.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

50.

Is the following equation balanced?

Al + O2 ---> 2Al2O3

a)

YES

b)

NO

51.

Which of the following equations are correctly balanced?

a)

12CO2 + H2O ---> C6H12O6 + O2

b)

CO2 + H2O ---> 3C6H12O6 + O2

c)

CO2 + 9H2O ---> C6H12O6 + O2

d)

6CO2 + 6H2O ---> C6H12O6 + 6O2

52.

In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?

a)

Mg and O

b)

Mg and MgO

c)

MgO

d)

O and MgO

53.

Balance this equation:

H2 + Cl2 ---> HCl

a)

It is balanced.

b)

H2 + Cl2 ---> 2HCl

c)

3H2 + Cl2 ---> 6HCl

d)

H2 + 3Cl2 ---> 6HCl

54.

Balance this equation:

HgO ---> 2Hg + O2

a)

It is balanced.

b)

2HgO ---> 2Hg + O2

c)

2HgO ---> Hg + O2

d)

HgO ---> Hg + 2O2

55.

Balanced this equation:

Sb2S3 + O2 ---> Sb + SO2

a)

It is balanced.

b)

Sb2S3 + O2 ---> 2Sb + SO2

c)

Sb2S3 + 3O2 ---> 2Sb + 3SO2

d)

3Sb2S3 + 3O2 ---> 2Sb + SO2

56.

How many Oxygen atoms are in 2SO4?

a)

1

b)

2

c)

4

d)

8

57.

Which side of a chemical equation is the product side?

a)

Left (before the yields sign)

b)

Right (after the yields sign)

58.

Chemical Reaction

a)

a substance formed as a result of a chemical reaction

b)

a change in matter that produces one or more new substances

c)

the process in which substances undergo chemical changes that result in the formation of new substances

d)

a substance that enters into a chemical reaction

59.

Chemical Equation

a)

A representation of a chemical reaction

b)

the starting materials in a chemical reaction

c)

the new substances that are formed in a chemical reaction

d)

tells how many atoms, molecules, or formula units take part in a reaction

60.

The coefficient in 3H2O is

a)

6

b)

5

c)

2

d)

3

61.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
62.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6

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